this notion has long been recognized at both international and domestic levels. most international copyright treaties contain provisions which aim at balancing these interest;for instance.article 9(1) and (2) of the Berne convention.article 9(1) strengthens the exclusive right of authors by providing that authors of literary and artistic works shall have the exclusive right of authorizing the reproduction of these works in any manner,while article 9(2) protects the public interest by allowing countries to create the exceptions to the reproduction right in their domestic law.it is believed that a common concern over public interest in the widest dissemination of information served as the rationale behind the exceptions contained in article 9, and these have been formulated with the aim of maintaining this balance between private interest and public interest.